Gestion des erreurs Camunda 7 vs 8 – Retries, Incidents et BPMN Errors (2026)

 

Introduction

La gestion des erreurs est essentielle pour garantir la fiabilité des workflows.

Dans Camunda, une bonne stratégie d’erreur permet :

  • Une meilleure résilience
  • Une continuité des processus
  • Une expérience utilisateur optimisée

Cependant, Camunda 7 et Camunda 8 gèrent les erreurs de manière très différente.

Dans ce guide, nous allons voir :

  • Les retries
  • Les incidents
  • Les erreurs BPMN
  • Les bonnes pratiques

🏗️ Vue d’ensemble de la gestion des erreurs


Différence clé :

  • Camunda 7 → Gestion transactionnelle
  • Camunda 8 → Gestion event-driven

👉 Cela impacte profondément retries et debugging.

🔁 Gestion des Retries

🔹 Camunda 7


  • Géré par le Job Executor
  • Retries configurables (ex: 3 tentatives)
  • Basé sur async continuations

Exemple :

camunda:failedJobRetryTimeCycle="R3/PT5M"

👉 Automatique côté moteur

🔹 Camunda 8


  • Géré par les workers externes
  • Logique de retry contrôlée par le développeur
  • Support du backoff

Exemple :

client.newFailCommand(job.getKey())
  .retries(job.getRetries() - 1)
  .send();

👉 Plus flexible mais plus complexe

⚠️ Gestion des Incidents

🔹 Camunda 7


  • Incident quand retries = 0
  • Visible dans Cockpit
  • Retry manuel

👉 Debugging centralisé

🔹 Camunda 8


  • Géré via Camunda Operate
  • Retry possible via UI
  • Conçu pour systèmes distribués

👉 Monitoring moderne

🔄 Erreurs BPMN (Erreurs Métier)

🔹 Camunda 7


  • Utilisation de :
throw new BpmnError("ERROR_CODE");
  • Gestion via :
    • Boundary Events
    • Error Events

👉 Bonne séparation métier / technique

🔹 Camunda 8


  • Erreurs envoyées depuis les workers :
client.newThrowErrorCommand(job.getKey())
  .errorCode("ERROR_CODE")
  .send();

👉 Aligné avec architecture event-driven

📊 Comparaison Rapide

FonctionnalitéCamunda 7Camunda 8
RetriesMoteurWorker
IncidentsCockpitOperate
BPMN ErrorsJavaWorker
ExécutionMixteAsync
DebuggingCentraliséDistribué

🧠 Bonnes Pratiques

Camunda 7 :

  • Utiliser async before/after
  • Séparer erreurs métier et techniques
  • Monitorer via Cockpit

Camunda 8 :

  • Implémenter retries côté worker
  • Utiliser backoff exponentiel
  • Assurer idempotence
  • Monitorer via Operate

⚠️ Erreurs Courantes

  • ❌ Confondre erreurs métier et techniques
  • ❌ Mauvaise configuration des retries
  • ❌ Ignorer l’idempotence
  • ❌ Utiliser des appels synchrones longs

🧠 Conclusion

👉 Camunda 7 = Simple et centralisé
👉 Camunda 8 = Flexible et scalable

✔ Cas simples → Camunda 7
✔ Architectures modernes → Camunda 8

📚 Articles Recommandés

  • 🔗 Camunda 8 vs Camunda 7 – Différences clés
  • 🔗 Architecture Camunda 8 expliquée
  • 🔗 Gestion des utilisateurs Camunda 8
  • 🔗 Cas d’utilisation réels Camunda
  • 🔗 Monitoring Camunda (Prometheus vs Datadog)
English version: https://shikhanirankari.blogspot.com/2026/03/how-to-handle-errors-in-camunda-7-vs.html

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